1106665 has 12 divisors (see below), whose sum is σ = 1545156. Its totient is φ = 758688.

The previous prime is 1106653. The next prime is 1106671. The reversal of 1106665 is 5666011.

It can be written as a sum of positive squares in 2 ways, for example, as 132496 + 974169 = 364^2 + 987^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1106665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2014 + ... + 2503.

It is an arithmetic number, because the mean of its divisors is an integer number (128763).

2^1106665 is an apocalyptic number.

It is an amenable number.

1106665 is a deficient number, since it is larger than the sum of its proper divisors (438491).

1106665 is an equidigital number, since it uses as much as digits as its factorization.

1106665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536 (or 4529 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1106665 is about 1051.9814637150. The cubic root of 1106665 is about 103.4360811743.

It can be divided in two parts, 1106 and 665, that added together give a palindrome (1771).

The spelling of 1106665 in words is "one million, one hundred six thousand, six hundred sixty-five".